Door-opening appliance



W. P. WHITE.

DOOR OPENING APPLIANCE.

APPLICATION FILED 050.9. 1920.

1,41 3 ,642. e e Apr. 25, 1922 2 SHEETS-SHEET l.

luvgm'on WRYYhifc BY 2 g A-n-vs W. P. WHITE.

DOOR OPENING APPLIANCE.

APPLICATION EILED DEC-9, I920.

Patented Apr. 25, 1922.

2 SHEETS-SHEET 2- I WILLIAM B. WHITE, or BUFFALO A ;sAs AToHnWAnonn'AnAf nooa-ornnme'arrnmnon.

Speeificationjof lletters I atent. Pat gnted Apr,-

' Application.filedbecembcr 9, 1920. Serial No. 429,496.

T 0 all whom it may concern:

Be it known thatl, WILL IAM P. WH of'the town of Buffalo Gap, in the Province of Saskatchewan, Canada,v have. invented certain new and useful Improvements in Door-OpeningAppliances, of which theufollowing is the specification, V

The inventionrelates, to improvements, in

appliances for-opening doors and such-likeand the generalobjectofthe invention is to provide a device by which onecan open the door priortoreaching itand; close it afterhe has passed andto'arrange theldeviceso that it will hold the door-either positively opened or closed orpartially open'as wished.

A further object isto constructthedevice in. av simple manner. so that the working partswhen collapsed will beConttinedwithin an enclosing casing, thereby rendering the'appliancecompact for shipping or storage purposes." a

A furtherobject is to. arrange the appliance so that it canbe readily; set up and attachedto the door.-

With the .abovemore important objeotsain view the invention consists essentially in the arrangement and construction ofpartshere- ,inafter more particularly described; and

later: pointed out in the appended claims,-

reference being. bad to; the; accompanying drawings; in which Fig. 1 is:a perspective View of; the; appliance as-itappears installed; and attached to the door and with the doorclosed; V

. .Fig', 2 is a side view oftheappliance as it appears extended andyiwith part of the casing broken away toexpose construction.

Fig. 3' is anenlarged detailechhorizontal sectionaliview-at 3 3 Figure 2 I F ig, 4 is-a viewsnn lar; to Figured. with the appliance as appearsfwhen the'door is} open. 7

V Fig.- 5is a sectional'view at 5i 5*Fig;

F ig. 6 isa; perspeotive -view offthe pairs of winding strips and associated; parts! .In the drawings like characters of 'refen ence indicate correspondingparts intheseveral figures. I

1 represents: a wall or; partition containingthedoor 2 which is hinjged inthe ordinary way to the door: frame i as-indioated; at

My appliance isinstalled at a short distance from the door and inaa location more orlesszdirectly opposite-the; hinged side thereof. i the floor 5 mount astationary casing 6 which in the present, instance is cylindrical in form and is fitted with, a side opening 7. 8 a vertical shaftextending lengthwise through the; cylinder and the floor and fitted in a location beneath the floor with apinion 9 operatingon; a rack bar 10. 11.and 12' are-footpedals located at some distance fromthe door: and at opposite sides of; the partition,, the said foot pedals being provided with shanks 13. ex

.windingstrips 18-and 19, the said strips being all of-equal length. and vconnectedfhy cross strips 20. The pairs ofstrips; are hinged together by hinges 2Y1" and22 located,

at the sides "of the strips.-. Pairs of'coiled springs 23 are connected to the adjacent ends of buttedstrips andthese springsserve to 7 hold the strips normally in an extendedpd. 85,

sition as best shown in Figure G 'where it will beobservedthat the springs are to the sides of the hinges. Actually. the springs normally tend to prevent the breaking-of the; joint between the strips at, t-he'hingesa-nd the pairs of strips form a fiexibleww'inding arm which is utilized to connect the winding blocks to the door.- Oneend of this flexible arm'i's connected by hinges similar-.tothose 21 -tothe ends of the arms 17 and the'other end of the flexible arm is connected; bygapin 24to theswinging"edge ofthe door:

Accordingto the above arrangement-it will be apparent that when the shaft-His turned the pairs ofstrips-18-and 19 Willbe- 106 wound'around; the three sides of the blocks and at the same time the doorW-ill bepulled open; f p In orderto positively hold the Wound pairs of strips to the-blocks when the door is being closed I, have provided the follow- 'r? of seas. 18-and 1 9 was a 1 V understood by referring to Figures 2-5 and 4.

In the opening of the door the pairs of strips 18 and 19 wind on the blocks and they wind the cross rods or catches 25 catch the hooks and carry the hooks with them, the hooks turning on the shaft and moving against the action of the springs 28, it being here understood that the cables turn around the sleeves. In the open position of the door the springs 23 which are comparatively strong ones are tending to hold the pairs of strips tightly wrapped around the blocks and although, the springs 28 are extended the door remains open as they cannot turn the hooks back against the locking effect of the springs 23 which are much stronger than they are. The hooks however, act in conjunction with the catches and retain the pairs of sections tightly nested around the blocks as otherwise they might have a tendency to shift.

In the reverse movement of the shaft 8 orthat required to open the door the pairs of strips wind off the blocks and stiffen out as they are projected through the opening 2' and under the action of the springs The door is accordingly closed as the pairs of strips are extended.

. If the door is a heavy one it will naturally resist closing to a certain extent and this resisting action of the door will have a tendency to force the strips wound on the blocks back or out towards the casing. This movement of the said stripsjis prevented by the hooks and catches at this time. However, as eachpair of stripscomes around and is ready to wind off the blocks through the opening 7 and in the extended position the hooks are stopped by the rod 27 and the catches or rods 25 pass away from the hooks in the same'manner as they passed behind them. After the appliance has been'set up and attachedto' the door one can presssay the pedal 11' and open the door. Then after having-gone through the doorway if he presses the pedal 12 and reverses the movement of the rackhe will close the door.

" it is'desired at any time to leave the door partially open to a greater or less ere tent this can be done by pressing the foot pedal to wind one or more ofthe pairs of strips inthe cylind er. The door will re- -mainpartially open in any selected position for the reason that if only one or-two' of the palrs' 'of strips are wound ofi the'blocks the having one end pivotally attached. to the free edge of the door and the other end connected to the shaft, means located. at some distance from the door and connected to the shaft and adapted when manipulated to turn the shaft in either direction and thereby extender wind thejointed arm and spring means for releasably locking the joints of the arm closedas the arm is extended.

2. The combination witha pivoted door, of a winding shaft opposing the pivoted side of the door, a jointed arm pivotally connected to the free edge of thedoor'and to the winding shaft, said ointed arm being formed from a number of similar strips hinged together, means located'at some distance from'the door and attached to the shaft and adapted when manipulated to rotate theshaft in. either direction, to ex tend or wind the strips and spring means associated with the strips adaptedto normally maintain a closed joint between the stripsas they are extended'from the shaft. 3. The combination with a pivoted door, of a winding shaft opposing the pivoted side of the door, an'equi-sided winding block secured. to the shaft, a ointed arm having one end attached to the winding block andfthe other end pivotally attached to the free edge of the door, said jointed arm being formed from a number of similar strips hinged together and of a length such that they will wind around the block, means located. at some distance from the door for rotating the shaft in either direction and springs associated with the joints of the sections and adapted to maintain the joints closedas the strips are unwound from the block.

l 4. The'combination with a pivoted door, of a winding shaft opposing the pivoted side of the door, an equi-sided' winding block secured to the shaft, a jointed arm having one end attached to the winding block and the other end pivotally attachedto the free edge of the door, said jointed arm being formed from a number of. similar strips hinged together and of a length such that they will wind around the block, means 10- cated ati' some distance from the door for rotating the shaft in either direction, springs associatedwith the joints of the sections and. adapted tomaintain the joints closed as the strips are unwoundfrom the shaft and a casing mounted onthe floor and enclosing of a Winding shaft opposing the pivoted side of the door, an equi-sided winding block secured to the shaft, a jointed arm having gaging means carried by the shaft and strips and adapted to catch the strips and hold them to the shaft as they are Wound therearound.

6. The combination with a pivoted door, of a winding shaft opposing the pivoted side of the door, an equi-sided Winding block secured to the shaft, a jointed arm having one end attached to the winding block and the other end pivotally attached to the free edge of the door, said jointed arm being formed from a number of similar strips hinged together and of'a lengths'uch that they will wind around the block, means located at' some distance from'the door for rot-atingthe shaft in either direction, springs associated with the joints of thesections and adapted to maintain the joints closed as the strips are unwound fromthe shafucatchesV carried by the strips, spring pressed hooks J pivotally mounted on the shaft, a stop normally engaging the hooks and limiting the turnlng movementin one-direction under the action of the attached springs, said hooks being adapted to engage the catches in the Winding of the strips and hold the strips to the block.

Signed at Bengough, this 30th dayof Oct. 1920. i

' WILLIAM P. WHITE.

In the presence of ELMER J. KELLER, ARTHUR LJ Dovn. 

